Drill head



March 7, 1950 T. G, La-NDERME DRILL HEAD 2 Sheets-Sheet 1 Filed M y 26, 1947 March 9 1950 T. e. LINDERME ,5 7

DRILL HEAD 2 Sheets-Sheet 2 Filed May 26, 1947- 7 v INVENTOR.

5 [5 77500025 lavas/07E,

Patented Mar. 7, 1950 UNITED STATES PATENT OFFICE DRILL HEAD Theodore G. Linderme, Detroit, Mich.

Application May 26, 1947, Serial No. 750,410

2 Claims.

My invention relates to a new and useful improvement in a drill head and particularly that type which is known as a multiple drill head. The invention involves a drill head having a single driving power or source and so constructed and arranged that a plurality of drills may be driven.

It is an object of the present invention to provide a drill head of this class so arranged and constructed that the various parts may be adjusted to various positions to space the drills apart various distances and at difierent relative locations.

Another object of the invention is the provision of a construction whereby a plurality of drills may be adjusted to lie parallel to each other and spaced apart varying distances depending upon the distances apart of the holes to be drilled.

Another object of the invention is the provision in a drill head of this class of a pair of relatively movable housings which may be moved around the common center and each of which contains mechanism which may be moved relatively to the housing for efiecting the location and spacing of the drills and provided with mechanisms exterior of the housing which may be moved to also afiect the location and spacing of the drills.

Another object of the invention is the provision in a drill head of this class of a pair of relatively movable housings each supporting a drill driving member and each supporting a movable drill driving member which may be moved to various positions relatively to the drill driving member on the housing and which may be moved to lie at either side so that the drill driving member supported by the housing may be positioned adjacent each other or they may be spaced apart and the movable members carried by the housing positioned adjacent each other to lie between the ones carried by the housing.

Another object of the invention is the provision of a drill head of this class which will enjoy great flexibility and in which a multitude of adjustments may be made.

Another object of the invention is the provision of a drill head of this class which will be light, economically manufactured, easily and quickly operated and adjusted, and highly efficient in use.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in the detail of structure illustrated without departing from the invention itself and it is. intended that such shall be embraced within the scope of the claims which form a part hereof.

Forming a part of this specification are drawings in which, 1; Fig. 1 is a side elevational view of the inven- Fig. 2 is an enlarged sectional View taken on line 2-2 of Fig. 1,

Fig. 3 is an enlarged bottom plan View of the invention,

Fig. 4 is a sectional view taken on line 4-4 of Fig.

Fig. 5 is a fragmentary, sectional view taken on line 55 of Fig. 2,

Fig. 6 is a fragmentary, sectional View taken on line 6-6 of Fig. 2, v

Fig. '7 is a fragmentary view slightly reduced in size taken on line 'l-'! of Fig. 4,

Fig. 8 is a sectional View taken on line 8-8 of Fi 5,

Fig. 9 is a sectional View taken on line 9-9 of Fig. 5,

Fig. 10 is a fragmentary, sectional view taken on line ill-l0 of Fig. 4.

In the drawings I have illustrated the invention comprising a neck split at [6 and provided with the outwardly projecting lugs l1 and I8 through which is extended a bolt to secure the body I5 to the stationary member 6| of a drill press. Through the member 61 extends the rotatable spindle 58. The body I5 is provided with the outwardly projecting flange which is secured by means of the bolts 21 to the disc 22 which serves as a support for the drill head housing, Extending outwardly from this disc 22 are the arms 25, 26 and 2'! which are connected to and serve to support the arcuate plate 28 in which are formed the spaced apart arcuate slots 29 and 30, as clearly shown in Fig. 2. Formed in the disc 22, as shown in Fig. '7, is a pair of oppositely disposed arcuate slots 23 and 24 and through each of these slots is extended a bolt l3l. A pair of these bolts is provided and each bolt is arranged to secure a housing to the disc 22. These housings are clearly shown in Fig. 2 and in Fig. 3 and the construction and arrangement of each of the housings is the same so that a description of one will suffice for both. However, the housing to the right of Fig. 4 is designated in its various parts, with the numbers followed by the letter a and these numbers correspond to the numerals used to designate the various parts of the housing to the left of Fig. 4 so that when the numeral is applied to one housing, it will be applicable to the other housing. Each housing is provided with a top 3| and a side wall 33 extending outwardly from which is a flange 32. Extended through an opening in the flange 32 is a bolt 35 which passes through the arcuate slot or 29 as the case may be. Threaded on this bolt is a nut 35 which, when tightened, will prevent the swinging of the housing relatively to the arcuate slot through which the bolt 35 projects. A bottom 34 is provided for each of the housings and held in position by the stay bolts 62 shown in Fig. 5. Projecting downwardly from the bottom 34, at one location, is a neck 31 in alignment with the inwardly projecting neck 38 to provide a bearing for the spindle 39 which rotatably projects therethrough. A gear 40 is mounted on the spindle 39 for rotation in unison therewith and a nut 4| is threaded on the spindle 39 to retain the gear 4|] pressed against the spacer I40 which bears against the thrust bearing 42. This nut 4| also serves to retain the shoulder on the spindle 39 engaged in the thrust bearing 43 and on the end of the spindle 39 is a suitable collet or chuck 44 which will serve as a means for fastening a drill so as to project outwardly in the usual manner.

The gear 40 meshes with a gear 45 mounted on the stud 46 which is secured to the top 3| and which projects through the upper plate 41 of a U-shaped bracket which has the vertically directed portion 48 and the lower portion 49, clearly shown in Fig. '6. Threaded into the upper plate 41 of the U-shaped bracket is a stud 55 which extends through an arcuate slot 56 formed in the top 3| of the housing, as shown in Fig. 6 and Fig. 2, so that the U-shaped bracket may swing on the member 46 as a pivot within the limits of the arcuate slot '56 when the screw 55 is unthreaded so as to prevent binding. A gear 53 is provided on its opposite ends with the trunnions 50 which engage in bushings 5| and 52 positioned in openings formed in the plates 41 and 49, respectively. This gear 53 meshes with the gear 45 and the trunnion 50 and the lower trunnion I53 at the lower end of the gear projects through a plate 54. This plate 54 is adapted to swing on the axis of trunnion '|53 within certain limits and will be explained later.

Mounted on the driving spindle I5! so as to rotate in unison therewith is a gear 51, the member |5'| being driven by the spindle 58 which extends through the inwardly projecting neck 59 formed on the disc 22 (see Fig. 4')

As shown in Fig. 5, the gear 53 meshes with a gear 62 formed to rotate in unison with the spindle 93 which extends through the bushing =64 having a flange 65 formed at its upper end and resting on the upper face of the plate 54. This bushing or sleeve 64 projects through the 'arcuate slot I65 formed in the bottom 34. This arcuate slot is clearly shown in Fig. 9. This sleeve or bushing 64 projects through an opening formed in the block 61 and threaded on the lower end of the bushing or sleeve 54 is a nut 63 which serves, upon being tightened, to clamp the block 3'! in fixed relation to the'bottom 34. This nut 66 fits in a pocket 68 formed in the block 61. The spindle 63 projects beyond the end of the bushing or sleeve 64 and through "a bushing 69 mounted in the block '61. As shown in Fig. 5, this block is provided at its lower end with a recess through which the spindle 63 projects. Mounted on the spindle B3 and positioned within the recess is a gear 10 which r0 tates in unison with the spindle 6'3 and which is held in position by means of the nut N. This gear 1| meshes with the gear 12 mounted on the spindle 13 for rotation in unison therewith.

This spindle 13 carries at its lower end the chuck or collet 14 which serves as an attachment for 5 a drill. The spindle I3 is journaled in a bushing 15 mounted in the block 61 and projects into the recess or pocket 11 formed in the upper face of the block 61. A nut 18 is threaded upon the upper end of the spindle l3 and adapted to bear against the thrust bearing 11 and retain the gear '12 bearing against the lower thrust lbearing Ill. The construction is such that when the gear 51 is rotated, the gear 53 will also be rotated to eifect a rotation of the spindle 63 and thereby a rotation of the spindle 13 while, at the same time, the spindle 39 will be rotated to the gears 45 and 40.

From the description thus far given, it will be seen that each of the housings may be swung relatively to each other on the axis of the member 46 shown on Fig. 4. In Fig. 3, the housing to the left has been swung slightly away from the housing to the right. A swinging movement, of course, cannot be effected until the nut 36 is loosened and as the housing swings it, of course, carries with it the two spindles 39 and '53 which may be termed drill spindles. The drill spindle 13 may be moved relatively to the drill spindle 39. This may be effected in two ways. One way would be to loosen the nut 66 and then swing the entire supporting structure embody ing the spindle 63 and the sleeve 54 through the arc |65 which is formed in the bottom 34. In this swinging movement, the plate 54, shown in Fig. 9, would swing on the member I53 as an axis. Another movement may be effected by loosening the nut H and the screw 66 and then swinging the block 61 on the spindle 53 as an axis and in this movement, the block 61 may swing entirely around the spindle 63. For instance, should the housing be swung further apart than that shown in Fig. 3 and then the block 61 swung around the spindle '63 as an axis, the spindles 13 may be brought adjacent to each other so as to lie between the spindles 39.

Another movement may be effected also. This has previously been referred to, namely, the swinging of the U-shaped brackets on the stud 46 as an axis. This swinging, of course, is lim- 50 ited by the length of the slot 55, as clearly shown in Fig. 2. In this movement, the plate 54 would shift bodily, together with the sleeve 64 and its associated part, and in Fig. 9 this movement would be downwardly so that the sleeve or bushing -64 would engage the ofi-set 19 formed in the slot i 65.

These various movements become necessary when the device is adjusted todifferent dimensions and different locations and it is desired to to drill a number of holes in alignment. For instance, should the housings, as shown in Fig. 2,

be moved toward each other so that the fiat faces are substantially in engagement, the chucks 14 would not be in alignment with the spindles of the chucks 44 and by moving toward and into the off-set 19 of the slot 165, this alignment might be effected. Similarly, the plurality of spindles which consist of four in the structure illustrated may always be brought into align- 70 ment regardless of the relative spacing of the individual spindles or their position. Consequently, it becomes possible, within the limits of the head, which depends upon the size of the head, to drill the four holes spaced apart '75 any desired position and in alignment with each other. It also becomes possible to drill them at any spacing or relative location within the limits of movement and, consequently, a highly efficient drill head is thus provided. Experience has shown that an operator very quickly becomes accustomed to making the necessary adjustments and swinging the various parts in order to obtain the proper spacing and the proper location of the various drills.

What I claim as new is:

l. A multiple drill head of the class described. comprising: a pair of housings swingable relatively to each other about a common center; means for securing said housings in fixed relation; a plurality of drill spindles mounted on and projecting below each of said housings; means for driving all of said drill spindles simultaneously; and means for adjusting the relative position of said drill spindles in each of said housings.

2. In a multiple drill head of the class dei5 scribed, a pair of housings swingably mounted relatively to each other and swingable about a common axis; a drill driving member carried by each of said housings and projecting downwardly therefrom and in fixed relation thereto; a second. drill driving member mounted on each of said housings and projecting downwardly therefrom, said second drill driving member being movable relatively to said housing and adapted for swinging to lie at either side of said stationary drill driving member; and means for driving each of said drill driving members simultaneously.

THEODORE G. LINDERME.

CITED The following references are of record inthe file of this patent:

UNITED STATES PATENTS Name Date Buhr Mar. 20, 1923 Number 

